Avogadro

Avogadro is a free, fantastically easy to use molecule editor. Because this editor is cross platform and light on computer resources, you know you can run it when and where you need it.

Free Open Source Mac OS X Windows Linux

Marvin

Marvin is a great alternative to the subscription based ChemDraw by CambridgeSoft. It is a collection of tools for drawing, displaying and characterizing chemical structures, substructures and reactions.

Free Mac OS X Windows Linux

ACD/ChemSketch

ACD/ChemSketch is a chemically intelligent drawing interface that allows you to draw almost any chemical structure including organics, organometallics, polymers, and Markush structures.

Free Personal Windows

Periodic Table of Elements

A Periodic Table of Elements that contains more than 25 scientific truths about each element including density, state, atomic radius, etc.. Can be translated into 8 languages.

Free Windows Android Web Kindle Fire Chrome Firefox OS

BKchem

BKChem is a free (as in free software :o) chemical drawing program. It was conceived and written by Beda Kosata and is currently maintained by Reinis Danne. BKChem is written in Python, an interpreted and very nice programming language.

Free Open Source Mac OS X Windows Linux

ChemDraw

Communicate with the natural language of chemical structures, biological pathways, and models

Commercial Mac OS X Windows

Gnome Chemistry Utils

The Gnome Chemistry Utils include six chemistry related programs: - GChemPaint, a 2D chemical formula editor. - a chemical calculator (computes raw formule, molar...

Free Open Source Linux

Kalzium

Kalzium (German for: Calcium) is a periodic table of the elements for KDE SC 4. It contains information about 103 chemical elements, including mass, charge, picture...

Free Open Source Linux

ChemJuice Grande

What's your favorite molecule? With ChemJuice, chemical structure drawing is now at your fingertips.

Commercial iPhone iPad